Optical: systems and elements – Mirror – With selective absorption or transparent overcoating
Patent
1995-01-12
1996-04-30
Nguyen, Thong Q.
Optical: systems and elements
Mirror
With selective absorption or transparent overcoating
359227, 359608, G02B 526, G02B 2602, G02B 508
Patent
active
055130496
ABSTRACT:
A day-night mirror for a vehicle has a first sheet of transparent material, a second sheet adjacent and parallel to the first sheet, the second sheet having a first light reflective surface facing the first sheet. The first and second sheets are joined along a predetermined peripheral region by a first wall of resilient material, and a second wall of flexible material joins the first and second sheets along opposed edge regions. The sheets and walls define a chamber containing a predetermined volume of translucent liquid. A third sheet is positioned within the chamber to move between an active position, with the third sheet between the first and second sheets, and an inactive position, with the third sheet removed from between the first and second sheets. The third sheet, in active position, has a second light reflective surface facing the first sheet, the second light reflective surface differing in light reflectivity from the first light reflective surface. An actuator moves the third sheet between active and inactive positions.
REFERENCES:
patent: 4054374 (1977-10-01), Craig
patent: 4726656 (1988-02-01), Schofield et al.
patent: 4917824 (1990-04-01), Lynam et al.
patent: 5028120 (1991-07-01), Taylor
Day-Night Mirrors, Inc.
Nguyen Thong Q.
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